USM UBBDX060403 Defender Premium Gloss Black Post Mount Diamond Plate Steel Mailbox Extra-large Capacity holds newspapers, magazines, packages, large envelopes and more. Weather resistant kiln baked Powder Coating Finishes provide superior protection against the elements. Magnetic Catches to keep doors shut tight against harsh weather. Long-lasting Stainless Steel screws and nylon self-locking bushings provide years of smooth operation. Easy Installation with Multiple Mounting Holes to fit most any post kit or mounting solution.